Barley malt syrup storage

I've been using Eden Foods organic barley malt syrup for the past four years.  Comes in a glass jar with a tight fitting lid. I buy it a dozen jars at a time, stash the unopened jars in a cupboard and the opened jar in the refrigerator.  Never an issue.  

This is a syrup that should have no problem being stored. Not sure why you are putting plastic wrap...tight fitting lid and fridge if you must but it is not needed. c

or some such squeeze bottle with an attached cap?   

How about a syrup bottle with a slide opening?

The trick to any syrup bottle or jar is keeping the lid and the rim of the jar clean.  Before closing the container, thoroughly wipe rim with a clean wet cloth and wash and dry the lid to remove any spilled syrup.  Make sure a paper or rubber seal is in place so no syrup leakes around the rim and into the threads of the lid.   Sugar syrup oftens works like glue once the lid is on so it is important to be careful when removing syrup, and clean the rim before replacing the lid.   :)  

There was a similar question about molasses here a while back. It seems the main route of "green-and-growy-things" into the stored container is the (measuring?) spoon. The story (I seem to remember it was 'minioven's) was that she put the spoon in her mouth to clean it off before scooping the second spoonful from the container, and without even realizing it wound up polluting the molasses so badly all the growth later made the jar explode. The idea of heating/sterilizing the spoon over the flame of a gas range sounds like a great one  ...but I'm still waiting for a similar great idea for those of us who have electric rangetops.